Big 12 previews

Updated 11:53 pm, Friday, November 30, 2012

(23) Oklahoma State (7-4) at Baylor (6-5)

Kickoff: 11 a.m., Floyd Casey Stadium, Waco

TV/Radio: FX, KSLR-AM 630

Line: OSU by 4 1/2

Series: OSU leads 18-12

Key matchup: OSU QB Clint Chelf vs. Baylor's secondary — One-time third-stringer Chelf has played well since earning the starting position, providing a fulcrum for Cowboys' balanced offense. Baylor's defense was back to its struggling ways last week in a shootout victory over Texas Tech and ranks 119th out of 120 FBS teams in total defense.

Numbers: Baylor has lost six straight and 17 of its last 20 games with OSU, with the Cowboys scoring at least 34 points in the last 13 games against the Bears. ... After producing only 181 rushing yards in his first seven games, Baylor RB Lache Seastrunk has averaged 128.9 yards in the past four.

Key matchup: OU QB Landry Jones vs. TCU defense — Jones has been sizzling in his last two games, leading dramatic comeback victories with the first back-to-back 500-yard passing games in OU history. But he'll be challenged by an emerging, productive TCU defense studded with playmakers. The Horned Frogs lead the conference in run defense, total defense, interceptions, takeaways and third-down conversion percentage.

Keys for TCU: Get some early offensive confidence. Freshman QB Trevone Boykin benefited from an early lead and the success of his running game last week vs. Texas. Horned Frogs need to feature a similar patient, mistake-free philosophy against an OU defense that isn't nearly as formidable as most of Bob Stoops' previous units.

Numbers: OU can wrap up a share of its eighth Big 12 title in 13 seasons with a victory. ... The Sooners have averaged 50.5 points, 640 yards of total offense and 37 first downs in the past two weeks. ... The Horned Frogs are 0-3 in home conference games this season and 4-1 in Big 12 games on the road.